Design and Reliability Analysis of Four-Legged Jacket Type Oï¬€shore Platform in North Java Sea

Siti Kaban; Sandy Hardian Susanto Herho; Ricky Tawekal; Dasapta Erwin Irawan

doi:10.24036/eksakta/vol26-iss01/550

EKSAKTA: Berkala Ilmiah Bidang MIPA

Open Access

Design and Reliability Analysis of Four-Legged Jacket Type Oï¬€shore Platform in North Java Sea

Siti Kaban ¹

, Sandy Hardian Susanto Herho ²

, Ricky Tawekal ³

, Dasapta Erwin Irawan ⁴

¹ School of Architecture, Planning and Perservation, University of Maryland, College Park, MD, USA

² Department of Earth and Planetary Sciences, University of California, Riverside, USA

³ Offshore Engineering Research Group, Bandung Institute of Technology, Bandung, Indonesia

⁴ Applied Geology Research Group, Bandung Institute of Technology, Bandung, Indonesia

Published 2025-03-30

Vol. 26 No. 01 (2025) PAGES 35-49

DOI 10.24036/eksakta/vol26-iss01/550

Views / Downloads 102 228

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Abstract

In ideal conditions, offshore platform design follows standardized international criteria such as the American Petroleum Institute Recommended Practice 2A-LRFD (API RP2A-LRFD) to ensure structural reliability and safety. However, the real conditions in the Java Sea present unique challenges, as environmental loading patterns and regional factors may differ from those assumed in global standards. This study proposes a comprehensive solution through combined structural analysis and reliability assessment using Monte Carlo simulation methods. The urgency of this research stems from the critical need to validate and potentially adjust design standards for regional applications, ensuring the long-term safety and reliability of offshore structures in Southeast Asian waters. The research objectives focus on evaluating the structural reliability of a four-legged jacket type platform using both deterministic and probabilistic approaches, specifically assessing the applicability of API RP2A-LRFD criteria to Java Sea conditions. Results demonstrate that while the structure meets basic design criteria, the reliability indices (Î² = 16.70 for LRFD, Î² = 22.29 for unfactored) suggest current load factors may be overly conservative for regional conditions.

Author Biographies

S

Sandy Hardian Susanto Herho

Department of Earth and Planetary Sciences, University of California, Riverside, USA

sandy.herho@email.ucr.edu

Department of Earth and Planetary Sciences

R

Ricky Tawekal

Offshore Engineering Research Group, Bandung Institute of Technology, Bandung, Indonesia

ricky@ocean.itb.ac.id

Offshore Engineering Research Group

D

Dasapta Erwin Irawan

Applied Geology Research Group, Bandung Institute of Technology, Bandung, Indonesia

dasaptaerwin@gmail.com

Applied Geology Research Group

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Design and Reliability Analysis of Four-Legged Jacket Type Oï¬€shore Platform in North Java Sea

Abstract